Weir converted from the touchline but Munster replied within four minutes as prop Tony Buckley's drive set up Leamy to fcross with O'Gara adding the extras.

Glasgow forged a 16-10 lead but Murphy then notched his opening try as he broke through some weak tackling to score.

O'Gara's conversion put Munster a point ahead but Donncha O'Callaghan's sin-binning put the visitors on the back-foot late in the opening half and Gregor was able to snipe over for a second Glasgow try.

Munster found another gear after half-time to score two quick tries.

First, Leamy picked up from a close-in scrum and sent in flanker Ronan for a textbook score.

O'Gara converted that one and set up the next try for Murphy with a perfect side-footed kick, and again converted to put Munster 31-26 up.

The Munster fly-half added four further penalties to seal the Irish province's victory.

Glasgow Warriors coach Sean Lineen: "It was the errors that cost us. The boys are disappointed but they were the architects of their own downfall.

"If they had stuck to the game plan it would have been fine, but when we scored some points the re-starts were very messy.

"Munster put a lot of pressure on our kickers at nine and 10 and we couldn't clear our lines. We gave them field position and that is lethal. They didn't have to do much for their tries, which is disappointing."

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